What type of line is used to create a layered haircut?

The correct answer is vertical lines. Vertical lines are essential when creating a layered haircut because they help in elevating the hair, allowing for the layering effect where some sections of the hair are cut shorter than others. This technique produces movement and volume in the hairstyle, which is a defining characteristic of layered cuts. By cutting with vertical lines, stylists can create layers that blend seamlessly into one another, ensuring a balanced and textured look.

Horizontal lines, while often used for cutting blunt ends or creating weight in a hairstyle, do not effectively achieve the desired lightness and layering. Diagonal lines may also be used for certain styles, adding dimension and direction, but they are not specifically the main technique for layering. Curved lines can create softer edges or shapes, but they don’t contribute to the layering process in the same way vertical lines do.